1. North Pacific Gyre: Much of the debris from the tsunami is expected to end up in the North Pacific Gyre, a large rotating ocean current. The gyre circulates clockwise and is powered by the Earth's rotation and winds. The debris could be carried around the gyre for years or even decades.

2. West Coast of North America: Some of the debris may drift across the Pacific Ocean and reach the west coasts of North America, including the United States and Canada. This could happen if the debris enters the Kuroshio Current, which flows northeast from Japan and then crosses the Pacific.

3. Hawaii: The debris could also reach Hawaii, which is located in the middle of the Pacific Ocean. This could happen if the debris enters the North Pacific Current, which flows east from Japan and then splits into two branches, one of which flows toward Hawaii.

4. Guam and Micronesia: Debris from the tsunami could also drift south and reach Guam and other islands in Micronesia. This could happen if the debris enters the North Equatorial Current, which flows westward across the Pacific Ocean.

5. Philippines and Southeast Asia: Some of the debris may reach the Philippines and Southeast Asia. This could happen if the debris enters the Kuroshio Countercurrent, which flows southwest from Japan and then merges with the North Equatorial Current.

The actual trajectories of the debris will depend on many factors, including the specific locations from which it originated, the currents and winds that affect it, and the time of year.